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fix(desktop): prevent jump-to-latest button from flickering during streaming

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Programmatic scroll calls (scrollIntoView) trigger onScroll events mid-animation,
causing updateAutoScrollState to momentarily see a non-bottom position and flash
the button on/off. Guard against this with isProgrammaticScrollingRef.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
程序员阿江(Relakkes) 2026-05-10 12:15:27 +08:00
parent a00f1882ab
commit 6e675f2d88
1 changed files with 9 additions and 0 deletions
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9
desktop/src/components/chat/MessageList.tsx
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@ -316,6 +316,7 @@ export function MessageList({ sessionId, compact = false }: MessageListProps = {
const scrollContainerRef = useRef<HTMLDivElement>(null)
const bottomRef = useRef<HTMLDivElement>(null)
const shouldAutoScrollRef = useRef(true)
const isProgrammaticScrollingRef = useRef(false)
const lastSessionIdRef = useRef<string | null | undefined>(resolvedSessionId)
const t = useTranslation()
const [turnChangeCards, setTurnChangeCards] = useState<TurnChangeCardModel[]>([])
@ -328,6 +329,7 @@ export function MessageList({ sessionId, compact = false }: MessageListProps = {
const scrollToBottom = useCallback((behavior: ScrollBehavior) => {
shouldAutoScrollRef.current = true
isProgrammaticScrollingRef.current = true
bottomRef.current?.scrollIntoView?.({ behavior, block: 'end' })
const container = scrollContainerRef.current
if (container && resolvedSessionId) {
@ -337,9 +339,16 @@ export function MessageList({ sessionId, compact = false }: MessageListProps = {
})
}
setShowJumpToLatest(false)
// Reset flag after the scroll event(s) from scrollIntoView have fired
requestAnimationFrame(() => {
isProgrammaticScrollingRef.current = false
})
}, [resolvedSessionId])
const updateAutoScrollState = useCallback(() => {
// Ignore scroll events triggered by our own programmatic scrolling to
// prevent the jump-to-latest button from flickering during auto-scroll.
if (isProgrammaticScrollingRef.current) return
const container = scrollContainerRef.current
if (!container) return
const isAtBottom = isNearScrollBottom(container)